Table 1

Schedule of data collection and intervention delivery time points

Data collectedTime point
Pre-baseline (consent)Baseline*Pre-Quit DateDays 1–3Day 7Day 14Day 21Day 28Delivery (Week 36 gestation)
Informed consentX†
Smoking status/ CPD/use of ecigsXP‡XX
Cravings & tobacco withdrawalPPP
NRT concerns & necessity beliefsPP
Saliva samplesPPX
Exhaled COXX
NRT adherence dataPXX
Reported engagement with interventionX
NicUse app data collection Graphic
Medical records dataX
Intervention Delivery (both trial arms)
Counselling from SSPs offeredXXXXXX
NRT dispatchXXXXX

  • *Randomisation follows baseline data collection

  • †X=data collected in both pilot and full trial phase

  • ‡P=data collected only in the pilot phase